Poriferans do not have distinct circulatory system. Instead water flow system support all these functions like circulatory, respiratory, excretory etc.
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circulatory system
The three functions of the blood when the circulatory system is working with the respiratory system are to take in needed gases from the lungs, expel waste gases from the tissues, and carry hormonal messages that communicate the body's needs to the respiratory adn circulatory systems.
Blood vessals ame blood
the hear tmakes itmove
blood, heart, blood vessels
The function of the circulatory system is to distribute blood throughout the body. Through the circulatory system, the blood delivers oxygen, nutrients, antibodies, and heat to all areas of the body.
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The brain controls all of the body including the nervous system, circulatory system, and, muscular system.
the circulatory system preforms many vital functions. it plays an important role in respiration. the circulatory system is also important in nutrition, in the removal of wastes and poisons, and in several other body processes.
The common purpose of the respiratory and circulatory systems are bringing oxygen into the body for cellular processes, and bringing carbon dioxide waste out of the body. The circulatory system has many other functions as well.